Automatic-locking dead-lock.



A. G. 0. BOGK. AUTOMATIC LOCKING DEAD LOOK.

APPLICATION FILED APR. 7, 1909.

1,074,597, Patented 0011.7,1913.

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A. G. 0. BOGK.

AUTOMATIG LOOKING DEAD LOOK.

APPLICATION FILED APR. 7, 1909.

1,074,597, Patented Oct. 7, 1913.

2 SHEBTS-SHEET 2.

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COLUMBI A PLANOURAPH c0.. WASHINGTON. D. C.

UNITED STATES PATENT QFFIC.

ALFRED C. 0. BOOK, OF ZBROOKLYN, NEW YORK, ASSIGNOR TO THE YALE 8c TOWNE MANUFACTURING COMPANY, OF STAMFORD, CONNECTICUT.

AUTOMATIC-LOCKING DEAD-LOCK.

Specification of Letters Patent.

Application filed April 7, 1909.

To all whom it may concern:

Be it known that I, ALFRED C. O. Boon, a subject of the Emperor of Germany, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Automatic-Locking Dead-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specification.

The presentinvention relates to improvements in looks for doors; and, the invention relates more particularly to a novel automatic dead-lock, which automatically sets itself in its locking position when the door to which it is attached is closed.

The invention has for its principal object to provide a simple and effective construction of dead-lock mechanism, the bolt of which is automatically thrown into its locking engagement when the door is closed; and furthermore, the invention also provides a novel means for retaining said bolt in its locking engagement so that the same cannot be released therefrom by being pressed backwardly into its casing through the application of any outside agency, but can only be released from its lockingengagement by manipulating the resetting knob, or, by the use of the proper key which is made to fit the lock. The invention has for its further object to provide means whereby the automatic dead-lock mechanism may be retained out of operation, when it is desired that the door shall be closed without being locked.

A still further object of the present in- .vention is to provide an automatic dead-lock mechanism which is reversible and can be readily and operatively attached to a door which opens either inwardly or outwardly.

Other objects of the present invention not at this time more particularly enumerated or described will be clearly evident from the following detailed description of my present invention. With these various objects of my present invention in view, the said invention consists, primarily, in the novel construction of automatic dead-lock mechanism hereinafter set forth; and, furthermore, the invention consists in the novel arrangements and combinations of the various devices and parts, as well as in the details of the construction thereof, all of which will be hereinafter more fully described and then finally embodied in the clauses of the claim which are appended to and which form an essential part of this specification.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a view of the automatic deadlock mechanism embodying the principles of my present invention, the same being shown in its operative position upon a door and the bolt thereof being shown in its locking engagement; a portion of the casing is removed to show the interior working parts thereof. Fig. 2 is a horizontal cross section of the same, taken on line 22 in said Fig. 1. Fig. 3 is a view from the back of said automatic dead-lock mechanism, the same being removed from the door and the bolt thereof shown in its reset position. Fig. 4. is a vertical cross section of the same, taken on line H in said Fig. 3. Fig. 5 is a longitudinal cross section of the automatic dead-lock mechanism in its attached position upon a door, the bolt thereof being shown in its reset position and the releasing latch in its operative position as the door approaches its closed position. Fig. 6 is a detailview similar to that shown in Fig. 5, but illustrating the automatic dead-lock mechanism attached in its operative posi tion upon a door which opens outwardly. Fig. 7 is a perspective view of the releasing latch.

Similar characters of reference are employed in all of the above described views, to indicate corresponding parts.

Referring now to the said drawings, the reference character 8 indicates a door adapt ed to open inwardly, and the reference-character 9 indicates a portion of the door-jamb. Secured upon said door-jamb 9 in a proper position is a striking-plate 10 so constructed as to provide a suitable receiving socket 11 which is adapted to receive the bolt of said automatic dead-lock mechanism when the same is thrown into its locking position. Suitably secured upon said door 8 in a proper position so as to register with said striking-platelO when said door is closed is the automatic dead-lock mechanism, the same comprising a suitable casing 12 provided in its interior with a pair of off-set portions 13, the sides of which form suitable guides against which the tail-frame 14 of a dead-lock bolt 15 slides in its forward and backward movement. The said tailframe 14 is provided with a .suitably located cut-away-portion or notch 16. Suitably mounted upon a retaining-post secured to said casing 12 is'a coil-spring 17, one of the free-ends of which engages the back of said tail-frame 14 of said dead-lock bolt 15v and tends to force said bolt forward into its locking position. Pivotally mounted upon a post 18 is a restraining tumbler 19 provided at its free end with a'camfportion 20 and a nosing 21, said nosing 21 being adapted to normally engage said cutaway portion or notch 16 of said tail-frame 14, thus restraining said bolt 15 from sliding forward into its locking position. Said restraining tumbler 19 is provided with a spring 22 properly connected and arranged therewith to return and retain the same in its restraining engagement with the cutaway portion or notch 16 of said tail-frame 14. Said casing 12 is provided with a suitable opening 23 to permit said bolt 15 to pass therethrough to its lockingposition, and slidably arranged in this said opening next to said bolt 15 is a releasing-latch 24 provided with a latclrnosing'25 adapted to normally project beyond the end face of said casing 12. Arranged upon the side of said releasing-latch is a screw-stud '26 which projects into and slidably engages the sides of a cutaway-portion 27 of the back-plate 28 of saidcasing 12. Extending rearwardly from the inner end of said releasing-latch is a rod 29, the free end of which is slidably arranged in a perforation of a supportingpost 30 secured to or forming a part of said casing 12. Arranged upon said rod 29, between said post 30 and the end of said releasing-latch 24, is a coil-spring 31 which tends to return and retain said releasinglatch in its operative position with its nosing 25 projecting beyond the end face of said casing 12. The said 1"eleasing latch 24 is further provided upon its inner or rear end with a pair of cams 32 and 33, one of said cams being at proper times caused to engage the cam-portion 20 'of said restrainingtumbler 19 to lift the same so 'asto release its nosing 21 from its restraining engagement with the cutaway-portion or notch 16 of said tail-frame 14. The purpose of providing two cams 32 and 33 is this; one camis'locatedon each side of said releasing-latch 24 and when the automatic dead-lock mechanism is placed uponra door which opensinwardly, the'cam'i32 is caused to engage said restraining-tumbler in the 25 is thus secured in its "reversed position so that the cam 33 engages at proper times with the restraining tumbler l9. 'Proj'ecting from the interior side of saidca sing '12 is a post 34 provided at its free end with a chamfered portion 35. The'said tail-frame 14 is constructed to straddle said post 34. Pivotally mounted upon a portion of said tail-frame 14 is a locking tumbler 36, the same being provided with a suitable cat-chportion ornosing 37 which, when the bolt 15 assumes its locking position engages with the chamfered portion 35 of said post 34 and thus locks the said bolt 15 in its locking position, preventing-the same from being pushed backwardly intofthe casing '12'by means of the application of any extraneous means operating upon the i projecting end of said bolt 15. Said locking-tumbler 36 is provided with a suitably arranged spring 38 to bring the sameinto operative engagement with said post 34 at prop'er time's.

The free end of said locking-tumbler is provided with a contact piece or lug 39. Arranged so as to oscillate within saide'asing 12 is adog 40, the'same being properly secured by any suitable means to the shank of a resetting-knob 41 which projects from the V outer side of said casing 12. Pivotally secured upon the back-plate 28 of said casing 12, so as to oscillate thereon, is a similar dog 42 provided with a centrally, disposed receiving-slot 43, this slot '43 is adapted to receive the free end of a false-key 44 which projects from the cylinder 45 of any wellknown type of key-barrel 46 which is arranged within a suitable opening '47 in, said door 8, and in 'a proper position to register and connect properly with said automatic dead-lock mechanism as above described, thus affording a means whereby said lock may be reset or'unlocked by means of a key from the outside of said door. The tailfraine 14 isprovided with asuita'bly located lug or projection 48 adapted at proper times to be'engaged by said dogs 40 and 42. The means whereby said bolt 15 may be retained out'of operation, when it is desired that the door shall be closed without being locked, comprises a cam-portion 49 which formsa zpar t'of the end of said tail-frame 14. The dog 40 is turnedby meansof the resetting-knob '41 connected therewith until it occupies the position illustrated by the dotted lines in said Fig. 3, this Position bringing the free end of said dog 40 into holding engagement with said cam-portion 49 thus preventing the spring 17 from forcing said tail-frame 14 and its bolt 15 forward when the restraining-tumbler 19 is released from its holding engagement with said tail-frame 14 by means of the operation of said releasing-latch 24, as above described.

The operation of the above described automatic dead-lock mechanism is as follows :Assuming that the door stands open the bolt 15 then occupies its withdrawn position within the casing 12, as shown more particularly in Fig. 3 of the drawings. The releasing-latch 24 is also in its normal position with its nosing 25 projecting beyond the end-face of said casing 12. As the door is pushed to its closed position, the chamfered portion of said nosing 25 comes in contact with a said striking-plate 10 whereby said releasing-latch 24 is pushed inwardly and the cam 32 is brought in operative engagement with the cam-portion 20 of said restraining-tumbler 19 so that the latter is raised, causing the nosing 21 to be lifted away from its restraining engagement with the cutaway portion or notch 16 of the tail-frame 14 of said bolt 15. The bolt 15 being thus released from its withdrawn position within the casing 12 is caused to fly forward by means of the action of the spring 17 upon its tail-frame 14, and the free end of the bolt 15 moves into the receiving socket 11 of said strikingplate 10 thereby locking the door 8. As the said bolt 15 assumes its locking position, the locking tumbler 36 is caused to drop its catch-portion or nosing 37 in holding engagement with the said post 34 by means of its actuating spring 38, preventing thereby the said bolt 15 from being pushed out of its locking position by any extraneous means. To unlock the door and reset the automatic deadlock, the following operations take place: The knob 41 is turned so as to bring the free end of the dog 40 into contact with the contact-piece or lug 39 of said locking-tumbler 36, whereby the latter is raised so that the catch-portion or nosing 37 is released from its holding engagement with said post 34 and thus enabling the bolt 15 to be withdrawn from the receiving socket 11 of said striking-plate 10. As the oscillating or turning movement of said dog 40 continues, the free end thereof next strikes the lug or projection 48 of said tail-frame 14 and forces the same backwardly into its normal initial position withdrawing the bolt 15 with it. When the said normal initial position of said tail-frame is reached the restraining-tumbler 19 is caused to move its nosing 21 into restraining-engagement with the cutaway portion or notch 16 of said tail-frame and the said automatic dead-lock mechanism is reset. Of course, it will be clearly evident, that all of the above described resetting operations may be accomplished by the action of a key in a suitable key-barrel 46 in conjunction with the false-key 44 and dog 42 which connects therewith. When the automatic dead-lock mechanism is released so as to cause the bolt 15 to fly forward, the movements of tail-frame 14 and the spring-actuated locking-tumbler 36 will return either of the said dogs to their normal initial position ready to carry out the resetting operations.

It will be clearly evident from the above description that my present invention provides a novel and efficient construction of automatic dead-lock, which while possessing all the advantages of a simple dead-lock, also has the advantages of a spring-lock in addition to the special novel features of its own which are embodied in its construction.

I claim 1. An automatic dead-lock mechanism comprising a spring-actuated dead-lock bolt, a tail-frame connected therewith, a springactuated restraining-tumbler for engaging said tail-frame to retain said dead-lock bolt in its withdrawn position, a reversible releasing-latch adapted to release said restraining-tumbler from its holding engagement with said tail-frame, a spring-actuated locking-tumbler pivotally connected with said tail-frame, a stationary post adapted to be engaged by said locking-tumbler when said dead-lock bolt is thrown, means for resetting said dead-lock bolt, comprising a projection on said tail-frame, a key-barrelmechanism, a dog operated thereby, a knob operated dog, either of said dogs being operated to engage said projection to draw back said dead-lock bolt, a cam-portion connected with said tail-frame against which said knob-operated dog may be turned in holding engagement to detain said dead-lock bolt independently of said restraining-tumbler, to permit the door to be closed without throwing said dead-lock bolt.

2. An automatic dead-lock mechanism comprising a spring-actuated deadlock bolt, a tail-frame connected therewith, a springactuated restraining-tumbler for engaging said tail-frame to retain said dead-lock bolt in its withdrawn position, a reversible re leasing-latch adapted to release said restrainingtumbler from its holding engagement with said tail-frame, a spring-actuated locking-tumbler pivotally connected with said tail-frame, a stationary post adapted to be engaged by said locking tumbler when said dead-lock bolt is thrown, means for resetting said dead-lock bolt, and means for detaining said dead-lock bolt in its withdrawn position independently of said restraining-tumbler, to permit the door to be In tes timonyftha't I claim "fihe inventio'p closed Without throwing sziid dead-lock bolt set forth above I have'hereunto set my hand When so desired, comprising a cam-portion this 6th day of April 1909.

connected with said tail-frame, a rotatable ALFRED C. O. BOOK. 7 dog adapted to be turned in holding engage- Witnesses:

ment with said cam-portion, and means for GEORGE D. RICHARDS,

rotating said dog. ADOLPH HANSEN.

dofiis of this peiteiit iny be obtaihed 'for' five cents each, by ad'iiiesshig he C oiiniiissiohr of i'eteiits, Washington, D. G. 

